Gaya APA
Lueckenotte, . (1997).
Pengkajian Gerontologi (Seri pedoman praktis) = Pocket guide to gerontology asseement .
Jakartaa:
EGC.
Gaya MLA
Lueckenotte, .
"Pengkajian Gerontologi (Seri pedoman praktis) = Pocket guide to gerontology asseement".
Jakartaa:
EGC,
1997.
Text.